Math, asked by PurbaliGhosh, 7 hours ago

If the nth terms of an AP is (2x-1), find the sum of first the n number of terms of the AP.

Answers

Answered by diaexol7
3

For AP, an = a+ (n-1)d = 2n-1

a1 = 2-1 = 1

a2 = 4-1 = 3

Common difference , d = 3-1 = 2

Sum of n terms = (n/2)(2a + (n-1)d)

= (n/2)(2+(n-1)2)

= (n/2)(2+2n-2)

= (n/2)2n

= n2

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Answered by rashidamajid2684
0

Answer:

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